diff --git a/.gitmodules b/.gitmodules
index fcf2587..032114e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
+[submodule "PDP-10"]
+	path = PDP-10
+	url = https://github.com/awesome-cpus/awesome-cpus-pdp10
 [submodule "88000"]
 	path = 88000
 	url = https://github.com/awesome-cpus/awesome-cpus-m88k
diff --git a/PDP-10 b/PDP-10
new file mode 160000
index 0000000..b5f90e7
--- /dev/null
+++ b/PDP-10
@@ -0,0 +1 @@
+Subproject commit b5f90e7787747ae1db415ec620cb5aff421cd386